Senior Software Engineer

Senior Software Engineer (Early-Stage SaaS | .NET & React)

📍 London | 🏢 On-site | 💼 Full-time | 💰 Up to £100k + equity

The Role

A fast-growing startup is building a financial operations platform and is looking for a hands-on Senior Software Engineer.

You’ll help build the product from the ground up, own key features, and have a real influence on both the technology and the direction of the platform.

What You’ll Do

• Build new features across the backend and frontend
• Work with .NET and a modern JavaScript framework (React used internally)
• Help shape the architecture as the platform scales
• Work closely with founders, engineers and product teams
• Take ideas from concept to production

What You Need

• Experience building software with .NET or another modern backend language
• Experience with JavaScript/TypeScript on the frontend
• Comfortable working with APIs and databases
• Good problem-solving skills and ability to take ownership
• Keen to work in a startup environment where things move fast

Nice to Have (Not Essential)

• Cloud experience (Azure, AWS or GCP)
• Worked in startups or on SaaS products
• Understanding of financial or data-heavy systems

Why Apply?

• High ownership and influence from day one
• Chance to help shape a product and engineering culture early
• Competitive salary + meaningful equity
• Work with a small, ambitious team solving real-world problems